Home / 20,438.66-30,669.82-8,591.50

Finding the Fourth Proportional to 20,438.66, 30,669.82 and 8,591.50

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Solution

The fourth proportional to 20,438.66, 30,669.82 and 8,591.50 is: 12,892.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438.66 : 30,669.82 = 8,591.50 : x
  2. Step 2: Convert to fraction form
    20,438.66/30,669.82 = 8,591.50/x
  3. Step 3: Cross multiply
    20,438.66x = 30,669.82 × 8,591.50
  4. Step 4: Simplify right side
    20,438.66x = 263,499,660.38
  5. Step 5: Solve for x
    x = 263,499,660.38/20,438.66
  6. Step 6: Final answer
    x = 12,892.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.